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Fabricante

LC7471

On-Screen Display Controller for NTSC-Format Video

SANYO -> Panasonic 

Ordering number:ENN*4088

CMOS IC

LC7471

On-Screen Display Controller

for NTSC-Format Video

Preliminary

Overview

The LC7471 is a video display controller for superimpos-

ing text and low-level graphics onto an NTSC-format tele-

vision receiver. The LC7471 incorporates a 64 character

internal character generator ROM, a 24-character × 64-line

display ROM and a 176-character display RAM. Up to 288,

12 × 18-pixel characters can be displayed under micropro-

cessor control on a 24-character by 12-line display.

The LC7471 features selectable pixel width and pixel

height, and 64 vertical and 64 horizontal display start posi-

tions. It also features a flashing enable bit for each charac-

ter position.

The LC7471 operates from a 5 V supply and is available in

22-pin shrink DIPs.

Package Dimensions

unit:mm

3059-DIP22S

[LC7471]

22

12

1

11

21.2

Features

0.95

0.48

1.78

• Complete text and graphics video overlay circuitry.

• 64-character internal character generator ROM.

• 24-character × 64-line display ROM.

• 176-character display RAM.

Pin Assignment

• 288-character display capability.

• 12 × 18-pixel characters.

• Four pixel widths.

• Four pixel heights.

• Selectable background color.

• Approximately 0.5 or 1 s period character flashing op-

tion.

• 25, 50 or 75% flashing duty cycle.

• Internal or external synchronization.

• Serial data control.

• 5 V supply.

• 22-pin shrink DIP.

1.7

SANYO : DIP22S

Top view

Any and all SANYO products described or contained herein do not have specifications that can handle

applications that require extremely high levels of reliability, such as life-support systems, aircraft’s

control systems, or other applications whose failure can be reasonably expected to result in serious

physical and/or material damage. Consult with your SANYO representative nearest you before using

any SANYO products described or contained herein in such applications.

SANYO assumes no responsibility for equipment failures that result from using products at values that

exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges,or other

parameters) listed in products specifications of any and all SANYO products described or contained

herein.

SANYO Electric Co.,Ltd. Semiconductor Company

TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN

81001TN (KT)/5182JN(US) No.4088–1/12

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